Effect of feedback respiratory electrical stimulation training on rehabilitation of patients with moderate to severe stable chronic obstructive pulmonary disease

Objective To explore the effect of feedback respiratory electrical stimulation training (RESTB) on respiratory rehabilitation of patients with moderate and severe chronic obstructive pulmonary disease (COPD).

Methods A total of 120 patients with moderate and severe stable COPD were selected as study objects, and were divided into control group (n=60) and observation group (n=60). The control group received conventional treatment such as oxygen inhalation and bronchodilator, and the observation group received RESTB on the basis of conventional treatment, the treatment of both groups was lasted for 12 weeks. The pulmonary function indexesforced expiratory volume in the first second (FEV₁), forced vital capacity (FVC), FEV₁/FVC, respiratory muscle function indexesmaximum inspiratory pressure (MIP), maximum expiratory pressure (MEP), tranquildiaphragmatic activity(QDM), diaphragmatic activity in forced breathing (FDM), diaphragm thickness score (DTF), Dyspnea Scale (MRC) score, quality of lifeSt. George's Respiratory Questionnaire (SGRQ) score, exercise endurance6 min walking distance (6MWD), sleep qualityPittsburgh Sleep Quality Index Scale (PSQI) score and psychological statusHamilton Anxiety Scale (HAMA) score, Hamilton Depression Scale (HAMD) score were compared before and after intervention.

Results Before and after intervention, there were no significant differences in FVC, FEV₁ and FEV₁/FVC between two groups (P>0.05). After intervention, MIP, MEP, QDM, FDM and DTF in the observation group were higher than before intervention, and were higher than those of the control group (P < 0.05). After intervention, MRC score and SGRQ score of the observation group were lower than before intervention, and were lower than those of the control group (P < 0.05). After intervention, 6MWD in the observation group was longer than that before intervention and the control group (P < 0.05). After intervention, PSQI score, HAMA score and HAMD score of the two groups were lower than before treatment, and were lower in the observation group than those in the control group (P < 0.05).

Conclusion RESTB can improve respiratory muscle function, exercise endurance and sleep quality, improve psychological condition and quality of life of patients with moderate and severe COPD.